exam Maths Puzzle Numerical Ability

can you help me re-write Rewrite this equation 2x - 9y = -72 as a function of

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exam Other Question

having a tough time with geometry proof's

given: pqrs is a parrellagram with diagonal qs
line qr and line tw intersect at z

prove ts.zw =sz.qw
solve |3x+12|=18